oSIST prEN 1254-1:2007

Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes

This European Standard specifies materials, assembly dimensions and tolerances and test requirements for fittings of copper and copper alloys with or without plating or coating

Kupfer und Kupferlegierungen - Fittings - Teil 1: Kapillarlötfittings für Kupferrohre (Weich- und Hartlöten)

Diese Europäische Norm legt Werkstoffe, Anschlussmaße, Toleranzen und Anforderungen an die Prüfung von Fittings aus Kupfer und Kupferlegierungen mit oder ohne galvanischen Überzug fest.
Dieser Teil der EN 1254 legt die Maße von Kapillarlötfittings im Größenbereich 6 mm bis 108 mm fest für den Anschluss an Kupferrohre in Kalt- und Warmwassersystemen bzw. kombinierten Kalt-/Warmwassersystemen, Heiz- und Kühlsystemen, Erd- und Flüssiggassystemen.
Ferner sind die zulässigen Betriebstemperaturen und die maximalen Betriebsdrücke festgelegt.
Diese Norm gilt für Kapillarlötfittings für den Anschluss an folgende Rohre:
   Rohre aus Kupfer nach EN 1057;
   Vorummantelte Rohre aus Kupfer nach EN 13349.
Die Fittings können für den Anschluss an andere Rohre geeignet sein, sofern die Kapillarlötverbindung mit dem jeweiligen Rohr den Anforderungen dieser Norm entspricht.
Die Fittings können eine Kombination aller Anschlussarten umfassen, die in EN 1254 oder in anderen Normen festgelegt sind, sofern sie für das zu befördernde Medium/Gas geeignet sind.
Die Norm legt ein Bezeichnungssystem für Fittings fest.

Cuivre et alliages de cuivre - Raccords - Partie 1 : Raccords à braser par capillarité pour tubes en cuivre

La présente Norme européenne spécifie les matériaux, les dimensions et les tolérances d'assemblage ainsi que les exigences en matière d'essai concernant les raccords en cuivre et en alliages de cuivre, avec ou sans placage ou revêtement.
La présente partie de l'EN 1254 spécifie les dimensions des extrémités de raccord à braser par capillarité entre 6 mm et 108 mm, destinées à l'assemblage des tubes en cuivre utilisés dans l'acheminement de l'eau chaude, froide ou tiède, les systèmes de chauffage ou de refroidissement ou les systèmes au gaz naturel et au gaz de pétrole liquéfié (GPL).
Les températures de fonctionnement et les pressions de service maximales admissibles sont également établies.
La présente norme est applicable aux raccords capillaires pour l'assemblage des tubes suivants :
   tubes en cuivre conformes à l'EN 1057 ;
   tubes en cuivre gainés conformes à l'EN 13349.
Les raccords peuvent également être adaptés à l'assemblage d'autres tubes, à condition que le raccord capillaire qui accompagne le tube en question soit conforme aux exigences de la présente norme.
Les raccords peuvent être composés d'une combinaison de différents types d'extrémité spécifiés dans l'EN 1254, ou dans d'autres normes, à condition qu'ils soient adaptés au fluide/gaz qu'ils acheminent.
La norme établit un système de désignation des raccords.

Baker in bakrove zlitine - Fitingi - 1. del: Fitingi s konci za kapilarno mehko in trdo lotanje na bakrene cevi

General Information

• Status: Not Published
• Public Enquiry End Date: 18-Jul-2007
• ICS: 23.040.40 - Metal fittings
• ICS: 77.150.30 - Copper products
• Technical Committee: INEK - Nonferrous metals
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 02-Jun-2020
• Due Date: 07-Jun-2020
• Completion Date: 02-Jun-2020
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/131 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on pipes, tanks and ancillaries, not in contact with water intended for human consumption
• Ref Project: FprEN 1254-1 - Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes

Relations

• Revised: SIST EN 1254-1:1999 - Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes
• Effective Date: 08-Jun-2022

Overview

oSIST prEN 1254-1:2007 is a European standard developed by CEN that specifies the requirements for copper and copper alloy plumbing fittings with ends designed for capillary soldering or capillary brazing to copper tubes. This standard covers materials, assembly dimensions, tolerances, and comprehensive test requirements to ensure product safety and functionality. It applies to fittings intended for use in hot and cold water systems, heating and cooling systems, as well as natural gas and liquefied petroleum gas installations.

The fittings covered by this standard range in size from 6 mm to 108 mm nominal diameter and are intended primarily for copper tubes compliant with EN 1057 or pre-insulated copper tubes per EN 13349. The standard supports manufacturers by providing a clear framework for design, testing, and conformity evaluation, facilitating regulatory compliance and ensuring high-quality plumbing system components.

Key Topics

• Scope and Application
  Specifies fittings for capillary soldering and brazing connections to copper tubes used in water, heating, cooling, and gas systems.

• Materials
  Fittings must be made from copper or copper alloys registered by CEN/TC 133 or listed in European copper product standards. Leaded solders and high-zinc alloys (>10% zinc) for brazing fittings are restricted, especially to maintain safety in drinking water applications.

• Dimensions and Tolerances
  The standard defines strict dimensional requirements and tolerances for socket and male ends to ensure optimal solder or brazing joint quality. It includes guidelines for the use of gauges to verify conformity and specifies proper tube end sizing for reliable connections.

• Operating Conditions
  Defines permissible operating temperatures and maximum operating pressures based on soldering/brazing alloys used. For example, soldering with lead/tin alloys at 30°C is limited to a maximum pressure of 16 bar, while silver/copper brazing alloys permit higher pressures.

• Test Methods and Conformity
  Detailed testing protocols for leaktightness, stress corrosion resistance, dezincification, microstructure evaluation, and carbon film assessment are specified. The document outlines the processes for initial type testing (ITT) and factory production control (FPC) to ensure ongoing product quality.

• Marking and Documentation
  The standard mandates durable and permanent marking to maintain traceability throughout the product’s lifecycle. Documentation requirements support compliance verification and quality assurance.

• Regulatory Compliance
  Harmonized with European Construction Product Directive (CPD), this standard supports manufacturers in meeting EU regulatory requirements and facilitates acceptance under national and European approval schemes.

Applications

oSIST prEN 1254-1:2007 is essential for manufacturers, designers, and installers involved with copper plumbing systems, particularly in:

• Domestic and Commercial Water Supply
  Ensures safe, durable, and corrosion-resistant joints in potable water systems.

• Heating and Cooling Systems
  Provides reliable fittings capable of handling a range of operating temperatures and pressures typical in hydronic installations.

• Gas Distribution Systems
  Certified compatibility for natural gas and liquefied petroleum gas installations up to defined pressure limits.

• Pre-insulated Tubing Installations
  Supports fittings for modern pre-insulated copper tubes used in energy-efficient plumbing solutions.

• Compliance and Quality Assurance
  Enables manufacturers to demonstrate conformity to European and national regulations, simplifying market access and customer confidence.

Related Standards

For comprehensive coverage of plumbing fittings and related components, oSIST prEN 1254-1:2007 should be considered alongside these interconnected standards:

• EN 1057 – Copper and copper alloy tubes for plumbing and heating
• EN 13349 – Pre-insulated copper tubes with solid covering
• EN 1254-2 – Fittings with compression ends for copper tubes
• EN 1254-3 – Fittings with compression ends for plastic pipes
• EN 1254-4 – Fittings with threaded ends
• EN 1254-5 – Fittings with short ends for capillary brazing
• prEN 1254-6 – Fittings with push-fit ends
• prEN 1254-7 – Fittings with press ends for metallic tubes
• EN 29453 – Soft solder alloys chemical compositions
• EN 1044 – Brazing filler metals
• EN ISO 9001 – Quality management systems requirements

Adherence to this suite of standards ensures plumbing systems meet high safety, performance, and durability criteria throughout Europe.

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Keywords: copper plumbing fittings, capillary soldering, capillary brazing, copper alloy fittings, plumbing standards, EN 1254-1, European plumbing fittings standard, copper tube connections, soldered fittings, brazed fittings, copper pipe fittings, plumbing compliance, European Construction Product Directive.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2007
Baker in bakrove zlitine - Fitingi - 1. del: Fitingi s konci za kapilarno mehko in trdo
lotanje na bakrene cevi
Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary
soldering or capillary brazing to copper tubes
Ta slovenski standard je istoveten z: prEN 1254-1
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.120.30 Baker in bakrove zlitine Copper and copper alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
prEN 1254-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2007
ICS 23.040.40 Will supersede EN 1254-1:1998
English Version
Copper and copper alloys - Plumbing fittings - Part 1: Fittings
with ends for capillary soldering or capillary brazing to copper
tubes
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 133.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1254-1:2007: E
worldwide for CEN national Members.

prEN 1254-1:2007 (E)
Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Definitions .6
4 Operating temperatures and operating pressures.7
5 Requirements.8
6 Evaluation of conformity.16
7 Test requirements and parameters.19
8 Designation .25
9 Marking .25
10 Documentation.26
Annex A (normative) Test method for leaktightness of joints with metallic tube under internal
hydrostatic pressure .27
Annex B (normative) Method for the determination of the resistance to stress corrosion .29
Annex C (normative) Test method for fittings bodies with as-cast microstructure or fabricated by
welding or brazing under pressure.30
Annex D (normative) Test method for the carbon film of copper capillary fittings .32
Annex E (normative) Method for the determination of the mean depth of dezincification .33
Annex F (normative) Test method for determination the minimum length of engagement of a
socket having a formed groove.35
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive (CPD) 89/106/EEC.37
Bibliography .43

prEN 1254-1:2007 (E)
Foreword
This document (prEN 1254-1:2007) has been prepared by Technical Committee CEN/TC 133 “Copper and
copper alloys”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1254-1:1998.
Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 8 "Fittings" to
prepare the revision of the following standard:
EN 1254-1:1998, Copper and copper alloys — Plumbing fittings ─ Part 1: Fittings with ends for capillary sol-
dering or capillary brazing to copper tubes.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directives.
For relationship with EU Directives, see informative Annex ZA, which is an integral part of this document.
In comparison with the first edition of EN 1254-1:1998, the following significant technical changes were made:
 Harmonization of the standard to the Construction Product Directive (CPD);
 introduction of new definitions: “maximum operating pressure (MOP)”, "durably marked”, "permanently
marked", “initial type test (ITT)”, and “factory production control (FPC)”;
 due to the process of harmonization to the CPD, introduction of two new characteristics in Clause 5 Mate-
rial characteristics inherent to copper material which are not to be tested;
 text in Clause 6 Evaluation of conformity added due to the process of harmonization to the CPD;
 for permanent and durable markings, specification of their applicability in Clause 9 Marking;
 improved presentation of test methods; in annexes;
 due to the process of harmonization to the CPD, introduction of Annex ZA.
This Standard for copper and copper alloy fittings for joining metallic tubes or plastics pipes is in seven Parts.
The other Parts are:
 Part 2: Fittings with compression ends for use with copper tubes.
 Part 3: Fittings with compression ends for use with plastics pipes.
 Part 4: Fittings with threaded end connections.
 Part 5: Fittings with short ends for capillary brazing to copper tubes.
 Part 6: Fittings with push-fit ends.
 Part 7: Fittings with press ends for metallic tubes.
prEN 1254-1:2007 (E)
Introduction
Products in conformity with this part of this standard are considered suitable for drinking water applications
subject to either:
1) compliance with any national regulations in the country of intended destination, or
2) compliance in due course with the proposed European Acceptance Scheme (EAS) that will introduce
common EU requirements for testing for fitness for contact with drinking water. When the EAS is imple-
mented, this part of the Standard shall have added to it a special Annex (Z/EAS) to incorporate the provi-
sions of the EC Mandate M 136 and 1) will no longer be applicable.
This part of this European Standard provides the basis for the assessment of a manufacturer’s production
process for products manufactured in accordance with this standard. The assessment could be based on ini-
tial and continuing surveillance of the factory production control system, which could be concurrent with an
assessment of the manufacturer’s quality management system against EN ISO 9001.
Regulatory marking and the means by which regulatory marking is applied is dealt with in Annex ZA.
prEN 1254-1:2007 (E)
1 Scope
This European Standard specifies materials, assembly dimensions and tolerances and test requirements for fit-
tings of copper and copper alloys with or without plating or coating.
This part of EN 1254 specifies connection end dimensions of capillary soldering and brazing ends in the size
range 6 mm to 108 mm for the purposes of joining copper tubes intended for use in hot or cold or combined hot
and cold water, heating and cooling systems, natural gas and liquefied petroleum gas systems.
Permissible operating temperatures and maximum operating pressures are also established.
This standard is applicable to capillary fittings for joining the following tubes:
 Copper tubes to EN 1057;
 Pre-insulated copper tubes to EN 13349.
Fittings may also be suitable for joining other tubes provided the capillary joint with the specified tube meets the
requirements of this standard.
Fittings may comprise a combination of any of the end types specified in EN 1254 or other standards, provided
they are suitable for the fluid/gas being conveyed.
The standard establishes a designation system for the fittings.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 723, Copper and copper alloys — Combustion method for determination of carbon on the inner surface of
copper tubes or fittings
EN 1044, Brazing — Filler metals
EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and heat-
ing applications
EN 1254-2, Copper and copper alloys — Plumbing fittings — Part 2: Fittings with compression ends for use
with copper tubes
EN 1254-3, Copper and copper alloys — Plumbing fittings — Part 3: Fittings with compression ends for use
with plastics pipes
EN 1254-4, Copper and copper alloys — Plumbing fittings — Part 4: Fittings with threaded end connections
EN 1254-5, Copper and copper alloys — Plumbing fittings — Part 5: Fittings with short ends for capillary braz-
ing to copper tubes
prEN 1254-6, Copper and copper alloys — Plumbing fittings — Part 6: Fittings with push-fit ends
prEN 1254-7, Copper and copper alloys — Plumbing fittings — Part 7: Fittings with press ends for metallic
tubes
EN 1655, Copper and copper alloys — Declarations of conformity
prEN 1254-1:2007 (E)
EN 1775, Gas supply — Gas pipework for buildings — Maximum operating pressure ≤ 5 bar — Functional
recommendations
EN 13349, Copper and copper alloys — Pre-insulated copper tubes with solid covering
EN 14905, Copper and copper alloys — Plumbing fittings — Recommended practice for the installation of
copper and copper alloy plumbing fittings
EN 29453, Soft solder alloys — Chemical compositions and forms (ISO 9453:1990)
EN ISO 6509:1995, Corrosion of metals and alloys — Determination of dezincification resistance of brass
(ISO 6509:1981)
EN ISO 9001:2000, Quality management systems — Requirements (ISO 9001:2000)
ISO 6957:1988, Copper alloys — Ammonia test for stress corrosion resistance
NOTE Informative references to documents used in the preparation of this standard, and cited at the appropriate
places in the text, are listed in the Bibliography.
3 Definitions
For the purposes of this standard, the following definitions apply.
3.1
plumbing fitting
device used in a tube system for the purpose of connecting the tubes either to each other or to a component part
of a system
3.2
capillary end
end in which the joint is made by the flow of solder or brazing alloy by capillary action into the annular space
3.3
reducer (reducer for capillary soldering or brazing for copper tube)
component used to enable an end to connect tube of a smaller nominal diameter than the nominal diameter of
the fitting end
3.4
adaptor fitting
fitting combining more than one type of end
NOTE For details of the other ends, see the relevant Parts of this standard or other standards.
3.5
nominal diameter
nominal diameter of the fitting end expressed as the nominal outside diameter of the connecting tube
3.6
maximum operating pressure
MOP
maximum operating pressure at which pipework can be operated under normal operating conditions
prEN 1254-1:2007 (E)
3.7
durably marked
marked in such a way that the marking will remain readable at least up to the time of commissioning of the
installation
NOTE e.g. by ink marking.
3.8
permanently marked
marked in such a way that the marking will remain readable up to the end of the life of the installation
NOTE e.g. by stamping, etching or engraving.
3.9
initial type test
ITT
complete set of tests or other procedures described in the technical specification, determining the perform-
ance of samples of products representative of the product type
NOTE Other procedures — e.g. calculation.
3.10
factory production control
FPC
means by which a manufacturer ensures that the performances declared by the manufacturer (obtained from
ITT) continue to be valid for all subsequent products
4 Operating temperatures and operating pressures
Operating temperatures and operating pressures for assembled joints shall not exceed the values in Table 1
for the relevant soldering or brazing alloy.
prEN 1254-1:2007 (E)
Table 1 — Operating temperatures and operating pressures
Maximum operating pressures (MOP)
Operating
a, b
for nominal diameters
a
temperature
bar
Examples
Method
of soldering/brazing alloys from 6 mm over 34 mm over 54 mm
up to and up to and up to and
including including including
°C 34 mm 54 mm 108 mm
30 16 16 10
lead/tin 50/50 %
65 10 10  6
or 60/40 %
110  6  6  4
Soldering
30 25 25 16
tin/silver 95/5 %
or tin/copper
Cu 3 % max.  65 25 16 16
0,4 % min. remainder Sn
110 16 10 10
30 25 25 16
silver/copper cadmium-free
65 25 16 16
55 % to 40 % Ag
or copper/phosphorus
Brazing
94/6 %
or copper/phosphorus with
2 % silver 92/6/2 %
110 16 10 10
NOTE Soldering or brazing alloys containing lead or cadmium as alloying elements are not permitted in installations for water for

human consumption.
a
For use in applications outside the scope of this table, the approval of the manufacturer should be obtained.
b
Intermediate pressure ratings shall be obtained by interpolation.

5 Requirements
5.1 General
Fittings, including reducers, shall conform to the requirements of 5.2 to 5.4.
5.2 Materials
5.2.1 General
Fittings bodies shall be made from copper or copper alloys selected from materials either:
 specified in European copper and copper alloy product standards; or
 registered by CEN/TC 133;
provided that the fittings manufactured from them meet the functional requirements of this standard.
prEN 1254-1:2007 (E)
NOTE Some of the standardized coppers and copper alloys commonly used for the manufacture of fittings are shown
in Table 2. Details of registered alloys can be obtained from the CEN/TC 133 Secretariat.
Table 2 — Examples of commonly used materials
Material designation
Standard
Symbol Number
Cu-DHP CW024A EN 12449
CuSn5Zn5Pb5-C CC491K EN 1982
CuZn36Pb2As CW602N EN 12164
CuZn39Pb3 CW614N EN 12164
CuZn40Pb2 CW617N EN 12165
CuZn33Pb2-C CC750S EN 1982
CuZn15As-C CC760S EN 1982
NOTE This table do not constitute an exhaustive list.

Solder alloys shall be in accordance with alloys specified in EN 29453.
Brazing alloys shall be in accordance with alloys specified in EN 1044.
Products intended for use in drinking water applications shall meet the requirements of the European Accep-
tance Scheme (EAS).
In the absence of the EAS, national requirements apply.
5.2.2 Safety in case of fire — Reaction to fire
Products which consist of copper or copper alloys are products/materials that do not require to be tested for
reaction to fire (i.e. products/materials of Class A.1 according to Commission Decision 96/603/EC, as
amended 2000/605/EC).
5.2.3 Properties at high temperature
The mechanical properties of products which consist of copper or copper alloys at temperatures encountered
in heating networks are not reduced significantly; for example, it is not necessary to include the maximum ad-
missible stress in pressure calculations from ambient up to 120 °C.
5.2.4 Restrictions in the choice of materials
Cu-ETP (CW004A) is a permitted material only for integral solder ring fittings and shall not be used for other
types of capillary fittings.
Leaded solders shall not be used for manufacture of integral solder ring fittings.
Brazing fittings that are required to be dezincification resistant shall not be produced from copper-zinc alloys
containing more than 10 % zinc.
prEN 1254-1:2007 (E)
5.3 Dimensions and tolerances
5.3.1 Tolerances on diameters
The standardised nominal dimensions, diameters and their tolerances, are given in Table 3.
The socket and male end tolerances on diameter shall be in accordance with Table 3, which shall be verified
by the use of gauges shown in Figures 5 and 6 and Tables 10 and 11. For initial type testing, ovality of the
end shall be checked by taking the average of direct measurement of the smallest and largest diameters of
the socket. The limits are to be derived from the dimensions of the gauges and the tolerances given in
Table 3.
NOTE 1 Tolerances in accordance with Table 3 and the use of gauges in accordance with Tables 10 and 11 will en-
sure the distribution of solder or brazing alloy throughout the joint and will allow for the alignment of the male end of a fit-
ting or the free end of a tube in the socket.
NOTE 2 Because of potential difficulties due to maintaining correct form of tube ends, when capillary fittings are used
for soldering or brazing to copper tubes, the ends of the tubes should be sized to the outside diameter dimensions speci-
fied in Table 3 for a length not less than the length of engagement of the fitting.
NOTE 3 Socket and male ends are shown diagrammatically in Figures 1 and 2.
prEN 1254-1:2007 (E)
Table 3 — Tolerances on the nominal diameter
Values in millimetres
a
Tolerances on the mean diameter
Resulting diametrical difference
with respect to the nominal diameter D
Nominal diameter
D
Outside diameter Inside diameter
of male end of socket max. min.
+ 0,04 + 0,15
0,20 0,02
− 0,05 + 0,06
14,7
+ 0,05 + 0,18
25 0,24 0,02
− 0,06 + 0,07
27,4
b
b
b
+ 0,06 + 0,23
b
0,30 0,03
40,5
− 0,07 + 0,09
b
b
53,6
b
b
b
66,7
b
b
76,1
+ 0,07 + 0,33
0,41 0,03
− 0,08 + 0,10
b
b
88,9
b
b
a
Arithmetical mean of two diameters at right angles in a cross-section taken anywhere on the length of the socket or
of the male end.
b
The soldering or brazing of tubes and fittings for these diameters requires more skilled techniques (further infor-
mation is available in EN 14905).

prEN 1254-1:2007 (E)
Figure 1 — Socket
*) When the male end diameter is less than the fitting diameter, the length L of the male end shall be
increased to L (see Table 4).
Figure 2 — Male end
5.3.2 Minimum lengths of engagement
The minimum lengths of engagement of sockets and male ends shall be in accordance with Table 4.
The length L for integral solder ring fittings or integral brazing ring fittings shall not include the width of the
solder or brazing alloy groove [see Figure 1 b)].
Male ends intended for use with integral ring sockets shall include an allowance for the width of the solder or
brazing alloy groove.
In measuring the minimum length of engagement, it is necessary to determine the width of the solder groove.
The actual groove shape is unimportant providing that it contains sufficient solder to produce a sound joint on
assembly with the correct size of tube.
The measurement of a rectangular shaped groove can be readily achieved using standard measuring instru-
ments. The groove produced by means of a forming roller or similar means requires a different approach.
Annex F shows a method of determining the minimum length of engagement of a socket having a formed
groove.
prEN 1254-1:2007 (E)
Table 4 — Minimum lengths of engagement
Dimensions in millimetres
Length of engagement
Nominal diameter
D
L L
1 2
6,0  5,8  7,8
8  6,8  8,8
10  7,8  9,8
12  8,6 10,6
14 10,6 12,6
14,7 10,6 12,6
15 10,6 12,6
16 10,6 12,6
18 12,6 14,6
21 15,4 17,6
22 15,4 17,6
25 16,4 18,4
27,4 18,4 20,4
28 18,4 20,4
34 23 25
35 23 25
40 27 29
40,5 27 29
42 27 29
53,6 32 34
54 32 34
64 32,5 34,5
66,7 33,5 36,5
70 33,5 36,5
76,1 33,5 36,5
80 35,5 38,5
88,9 37,5 40,5
106 47,5 51,5
108 47,5 51,5
5.3.3 Minimum bore area
The minimum cross-sectional area of the bore through each fitting shall be not less than the theoretical mini-
mum area of the bore given in Table 5, except that for unequal-ended or adaptor fittings with ends specified in
other parts of EN 1254, or other standards, the smallest diameter shall apply provided that this diameter does
not restrict other outlets.
prEN 1254-1:2007 (E)
Table 5 — Minimum bore
Dimensions in millimetres
Nominal diameter
Minimum bore
D
6  4,0
8  6,0
10  7,0
12  9,0
14 10,0
14,7 11,0
15 11,0
16 12,0
18 14,0
21 18,0
22 18,0
25 21,0
27,4 23,0
28 23,0
34 29,0
35 29,0
40 35,0
40,5 36,0
42 36,0
53,6 47,0
54 47,0
64 55,0
66,7 57,0
70 60,0
76,1 65,0
80 68,0
88,9 76,0
106 92,0
108 92,0
5.3.4 Minimum wall thickness
Minimum wall thickness measured at any point shall be in accordance with dimension e in Table 6 (see
Figure 3). The minimum wall thickness requirements do not apply under indented marking on the socket end.
In the case of integral solder ring fittings where a groove is made within the soldering length, the minimum wall
thickness shall be in accordance with dimension e'f in Table 6 (see Figure 3).
prEN 1254-1:2007 (E)
Figure 3 — Minimum wall thickness
Table 6 — Minimum wall thickness
Dimensions in millimetres
Minimum wall thickness
Nominal
diameter
wrought copper alloys and cast coppers and
wrought coppers
D
continuous cast bar cast copper alloys
e f e f e f
6 0,6 0,54 1,0 0,55 1,0 0,65
8 0,6 0,54 1,0 0,55 1,0 0,65
10 0,6 0,54 1,0 0,55 1,0 0,65
12 0,6 0,54 1,1 0,60 1,1 0,71
14 0,6 0,54 1,1 0,60 1,1 0,71
14,7 0,7 0,63 1,2 0,66 1,2 0,78
15 0,7 0,63 1,2 0,66 1,2 0,78
16 0,7 0,63 1,2 0,66 1,2 0,78
18 0,8 0,72 1,4 0,77 1,4 0,91
21 0,9 0,81 1,4 0,77 1,4 0,91
22 0,9 0,81 1,4 0,77 1,5 0,97
25 0,9 0,81 1,4 0,77 1,6 1,04
27,4 0,9 0,81 1,5 0,82 1,6 1,04
28 0,9 0,81 1,5 0,82 1,8 1,17
34 1,0 0,90 1,6 0,88 1,8 1,17
35 1,0 0,90 1,6 0,88 1,8 1,17
40 1,1 0,99 1,8 0,99 2,0 1,30
40,5 1,1 0,99 1,8 0,99 2,0 1,30
42 1,1 0,99 1,8 0,99 2,0 1,30
53,6 1,2 1,08 1,9 1,04 2,3 1,49
54 1,2 1,08 1,9 1,04 2,3 1,49
64 1,4 1,26 2,0 1,10 2,4 1,56
66,7 1,4 1,26 2,0 1,10 2,4 1,56
70 1,4 1,26 2,3 1,26 2,6 1,69
76,1 1,6 1,44 2,6 1,43 2,8 1,82
80 1,8 1,62 2,8 1,54 2,9 1,88
88,9 1,8 1,62 2,9 1,59 3,1 2,01
106 2,1 1,89 3,3 1,80 3,5 2,27
108 2,1 1,89 3,3 1,80 3,5 2,27
prEN 1254-1:2007 (E)
5.3.5 Tolerance for the alignment of the fitting ends
The alignment of the ends of the fitting shall be within 2° of the specified axis.
5.4 Design and manufacture
5.4.1 Tube abutment
Fitting ends are usually manufactured with an abutment to limit tube (see Figure 4).
Fittings may be produced for special purposes, particularly useful for repairs, where the fitting ends do not in-
corporate abutments, allowing for the fitting to slide along the tube.

Key
1 Tube abutment
NOTE Figure 4 is diagrammatic only; the shape and number of abutments are at the manufacturer's discretion.
Figure 4 — Tube abutment
5.4.2 Surface condition
Fittings shall be clean and free from sharp edges.
5.4.3 Plated or coated surfaces
Requirements for plated or coated surface finishes shall be the subject of agreement between the purchaser
and the manufacturer.
6 Evaluation of conformity
6.1 General
The conformity of plumbing fittings to the requirements of this standard and with the stated values shall be
demonstrated by:
 initial type testing;
 factory production control by the manufacturer, including product assessment.
For the purposes of testing, plumbing fittings may be grouped into families, where it is considered that the
selected property/properties is/are common to all the fittings within that family.
prEN 1254-1:2007 (E)
6.2 Type testing
6.2.1 Initial type testing
An initial type test is the complete set of tests or other procedures, determining the performance of samples of
products representative of the product type.
Initial type testing shall be performed to show conformity with this part of this European Standard.
Tests previously performed in accordance with the provisions of this part of this European Standard (same
product, same characteristic(s), test method, sampling procedure, system of attestation of conformity, etc.)
may be taken into account. In addition, initial type testing shall be performed at the beginning of a new method
of production (where this may affect the stated properties).
All requirements in Clause 5 and 7.1 shall be subject to initial type testing. The material characteristics in 5.2.2
and 5.2.3 do not need testing because:
 reaction to fire — copper and copper alloys are Class A.1 according to Commission Decision 96/603/EC;
 properties at high temperature — mechanical properties are not reduced significantly at temperatures
concerned;
 release of regulated (dangerous included) substances — copper or copper alloys standardized or regis-
tered by CEN/TC 133 involve no regulated (dangerous included) substances.
6.2.2 Sampling, testing and conformity criteria
6.2.2.1 Sampling
Initial type testing shall be performed on representative samples of plumbing fittings production to be placed
on the market.
6.2.2.2 Testing and conformity criteria
Plumbing fittings shall be tested for conformity to the requirements and characteristics listed in Clauses 5 and
7 in accordance with the relevant methods given in Annexes A to F.
The results of all type tests shall be recorded and held by the manufacturer for at least 5 years after the end of
production of the product for which the ITT is representative.
6.3 Factory production control (FPC)
6.3.1 General
The manufacturer shall establish, document and maintain an FPC system to ensure that the products placed
on the market conform to the declared performance characteristics. The FPC system shall consist of written
procedures (works' manual), regular inspections and tests and/or assessments and the use of the results to
control raw and other incoming materials, equipment, the production process and the product.
All elements, requirements and provisions of FPC adopted by the manufacturer shall be documented in a sys-
tematic manner in the form of written policies and procedures. This production control system documentation
shall ensure a common understanding of conformity evaluation and enable the achievement of the required
component characteristics and the effective operation of the production control system to be checked.
prEN 1254-1:2007 (E)
Factory production control therefore brings together operational techniques and all measures allowing mainte-
nance and control of the conformity of the product with its technical specifications. Its implementation may be
achieved by controls and tests on measuring equipment, raw materials and constituents, processes, machines
and manufacturing equipment and finished products, including material properties of the products, and by
making use of the results thus obtained.
An FPC system conforming with the requirements of EN ISO 9001, and made specific to the requirements of
this part of this standard, is considered to satisfy the above requirements.
6.3.2 Requirements
The FPC system shall fulfill the requirements as described in the following clauses of EN ISO 9001:2000,
where applicable:
 4.2 except 4.2.1 a);
 5.1 e), 5.5.1, 5.5.2;
 Clause 6;
 7.1 except 7.1 a), 7.2.3 c), 7.4, 7.5, 7.6;
 8.2.3, 8.2.4, 8.3, 8.5.2.
NOTE The FPC system may be part of a Quality Management system, e.g. in accordance with EN ISO 9001:2000.
The manufacturer shall establish procedures to ensure that the production tolerances allow for the plumbing
fittings’ performances to be in conformity with the declared values derived from initial type testing.
The requirements, and the means of verification, are given in Clause 5 and 7.2 and Annexes A to F and the
minimum frequency of testing is given by the manufacturer’s quality system.
The manufacturer shall record the results of the tests specified above. These records shall at least include the
following information:
 identification of the plumbing fittings tested;
 date of testing;
 test results.
The results of inspections, tests or assessments requiring action shall be recorded, as shall any action taken.
The action to be taken when control values or criteria are not met shall be recorded and retained for the period
specified in the manufacturer’s FPC procedures.
6.3.3 Manufacturer-specific FPC system requirements
6.3.3.1 Personnel
The responsibility, authority and the relationship between personnel that manages, performs or verifies work
affecting product conformity, shall be defined. This applies in particular to personnel that needs to initiate ac-
tions preventing product non-conformities from occurring, actions in case of non-conformities and to identify
and register product conformity problems.
prEN 1254-1:2007 (E)
6.3.3.2 Equipment
All weighing, measuring and testing equipment necessary to achieve, or produce evidence of, conformity shall
be calibrated or verified and regularly inspected according to documented procedures, frequencies and
criteria. Control of monitoring and measuring devices shall conform to the appropriate clause of
EN ISO 9001:2000.
All equipment used in the manufacturing process shall be regularly inspected and maintained to ensure use,
wear or failure does not cause inconsistency in the manufacturing process.
6.3.3.3 Raw materials and components
The specifications of all incoming raw materials and components shall be documented, as shall the inspection
scheme for ensuring their conformity. The verification of conformity of the raw material with the specification
shall be in accordance with EN ISO 9001:2000, 7.4.3.
6.3.3.4 In-process control
The manufacturer shall plan and carry out production under controlled conditions. Compliance with
EN ISO 9001:2000, 7.5.1 and 7.5.2 shall be deemed to satisfy the requirements of this clause.
6.3.3.5 Traceability and marking
Batches or packages of plumbing fittings shall be identifiable and traceable with regard to their production
origin. The manufacturer shall have written procedures ensuring that processes related to affixing traceability
codes and/or markings (see Clause 10) are inspected regularly. Compliance with EN ISO 9001:2000, 7.5.3
shall be deemed to satisfy the requirements of this clause.
6.3.3.6 Non-conforming products
The manufacturer shall have written procedures, which specify how non-conforming products shall be dealt
with. Any such events shall be recorded as they occur and these records shall be kept for the period defined
in the manufacturer’s written procedures. Compliance with EN ISO 9001:2000, 8.3 shall be deemed to satisfy
the requirements of this clause.
6.3.3.7 Corrective action
The manufacturer shall have documented procedures that instigate action to eliminate the cause of non-
conformities in order to prevent recurrence. Compliance with EN ISO 9001:2000, 8.5.2 shall be deemed to
satisfy the requirements of this clause.
6.3.3.8 Handling, storage, packaging
The manufacturer shall have written procedures providing methods of product handling and shall provide
suitable storage areas preventing damage or deterioration.
7 Test requirements and parameters
7.1 Initial type testing
7.1.1 General
Fittings of all sizes, unless otherwise specified, shall be type tested but combinations within a test rig are per-
missible.
prEN 1254-1:2007 (E)
New fittings are required for each test
Details of type tests applicable to fittings intended for joining copper tubes are given in 7.1.4 and 7.1.5.
7.1.2 Preparation of fittings for testing
The fittings to be tested in accordance with 7.1.4 shall be assembled with the relevant copper tube in accor-
dance with the manufacturer’s instructions.
7.1.3 Test temperature
Tests shall be conducted at a temperature of (23 +/– 5) °C unless otherwise stated.
7.1.4 Leaktightness under internal hydrostatic pressure
When tested in accordance with the parameters shown in Table 7 fittings shall show no signs of leakage or
permanent distortion.
Table 7 — Hydrostatic pressure test parameters
Free length of the tube Test Number of test Test
Test pressure
in the test assembly duration pieces per size method
1,5 x maximum pressure specified
100 mm 15 min 1 Annex A
in Table 1
7.1.5 Resistance to stress corrosion
Fittings manufactured from copper alloys shall be resistant to stress corrosion. When tested in accordance
with Table 8, fittings manufactured from copper alloys shall show no evidence of cracking.
Table 8 — Stress corrosion resistance test parameters
Test Number of test
Fitting material Test method
solution pieces per size
Copper zinc alloy
pH 9,5 1 Annex B/ISO 6957
Zinc > 10 %
7.2 Factory production control system
7.2.1 General
In order to assure every production batch will meet the requirements of this standard, the manufacturer shall
operate a quality system that checks, at the minimum, on a regular basis, the aspects shown in Table 9 that
can vary during production.
prEN 1254-1:2007 (E)
Table 9 — List of factory production checks required
Description of check or test Check required
Dimensions of sockets, male end diameters, wall Gauge the socket with the use of go and not go
thickness and other dimensions determined by the plain gauges in accordance with Figures 5 and 6
manufacturer shall be confirmed on a sampling basis and Tables 10 and 11
Measure or gauge the wall thickness to Figure 3
and Table 6
Pressure test for fittings bodies with as-cast micro- 7.2.3
structure or fabricated by welding or brazing
Carbon in the bore 7.2.4
Resistance to dezincification 7.2.5

The frequency and number of test pieces is dependent on the manufacturer’s quality system.
7.2.2 Gauging of sockets and male end diameters
The socket and male end tolerances on diameter shall be in accordance with Table 2, which shall be verified
by the use of gauges shown in Figures 5 and 6 and Tables 10 and 11.

Key
1 GO
2 NOT GO
Surface roughness (texture) 3,2 µm except as stated.
NOTE Figure 5 is diagrammatic only.
Figure 5 — GO and NOT GO plug gauges

Key
1 GO
2 NOT GO
Surface roughness (texture) 3,2 µm except as stated.
NOTE Figure 6 is diagrammatic only.
Figure 6 — GO and NOT GO ring gauges
prEN 1254-1:2007 (E)
Table 10 — Dimensions of GO and NOT GO plug gauges
Values in millimetres
Gauge dimensions
(see Figure 5)
Nominal
diameter
Tolerance Tolerance
d
D 1
d on d on r
1 2
after wear
d d
1 2
6   6,068   6,060   6,150
8   8,068 ± 0,00125   8,060   8,150 ± 0,00125
10  10,068  10,060  10,150
12  12,069  12,060  12,150
0,7
14  14,069  14,060  14,150
14,7  14,769  14,760  14,850
± 0,0015 ± 0,0015
15  15,069  15,060  15,150
16  16,069  16,060  16,150
18  18,069  18,060  18,150
21  21,080  21,070  21,180
22  22,080  22,070  22,180
25  25,080  25,070  25,180
27,4  27,480  27,470  27,580
28  28,080  28,070  28,180
± 0,0020 ± 0,0020
34  34,096  34,090  34,230
1,0
35  35,096  35,090  35,230
40  40,096  40,090  40,230
40,5  40,596  40,590  40,730
42  42,096  42,090  42,230
53,6  53,697  53,690  53,830
54  54,097  54,090  54,230
64  64,108  64,100  64,330
± 0,0025 ± 0,0025
66,7  66,808  66,800  67,030
1,5
70  70,108  70,100  70,330
76,1  76,208  76,200  76,430
80  80,108  80,100  80,330
88,9  89,008  89,000  89,330
± 0,0030 ± 0,0030 2,0
106 106,108 106,100 106,330
108 108,108 108,100 108,330
prEN 1254-1:2007 (E)
Table 11 — Dimensions of GO and NOT GO ring gauges
Values in millimetres
Nominal Gauge dimensions
diameter (see Figure 6)
D
Tolerance Tolerance
d
d on d on
1 2
after wear
d d
1 2
6   6,037   6,050   5,950
8   8,037 ± 0,0020   8,050   7,950 ± 0,0020
10  10,037  10,050   9,950
12  12,036  12,050  11,950
14  14,036  14,050  13,950
14,7  14,736  14,750  14,650
± 0,0025 ± 0,0025
15  15,036  15,050  14,950
16  16,036  16,050  15,950
18  18,036  18,050  17,950
21  21,045  21,060  20,940
22  22,045  22,060  21,940
25  25,045 ± 0,0030  25,060  24,940 ± 0,0030
27,4  27,445  27,460  27,340
28  28,045  28,060  27,940
34  34,054  34,070  33,930
35  35,054  35,070  34,930
40  40,054 ± 0,0035  40,070  39,930 ± 0,0035
40,5  40,554  40,570  40,430
42  42,054  42,070  41,930
53,6  53,653  53,670  53,530
54  54,053  54,070  53,930
64  64,063  64,080  63,920
± 0,0040 ± 0,0040
66,7  66,763  66,780  66,620
70  70,063  70,080  69,920
76,1  76,163  76,180  76,020
80  80,062  80,080  79,920
88,9  88,962  88,980  88,820
± 0,0050 ± 0,0050
106 106,062 106,080 105,920
108 108,062 108,080 107,920
prEN 1254-1:2007 (E)
7.2.3 Integrity of fittings bodies with as-cast microstructure or fabricated by welding or brazing
When tested in accordance with the parameters shown in Table 12, fittings bodies after machining shall give
no visual indication of leakage.
Fittings bodies which leak shall be scrapped. No reclamation procedure shall be undertaken.
Table 12 — Pressure test parameters
Test pressure
Frequency and number
Fitting type Test method
of test pieces per size
pneumatic hydrostatic
Annex C,
Cast or fabricated bodies (5 ± 0,5) bar (24 ± 1) bar see Note 1
see Note 2
NOTE 1 The frequency and number of test pieces is dependent on the manufacturers quality system.
NOTE 2 Other pressure tests of equivalent performance may also be used.

7.2.4 Carbon in the bore
The internal surface of copper capillary fittings for soldering or brazing shall not contain any detrimental film
nor present a carbon level high enough to allow the formation of such a film during installation.
The maximum total carbon level on internal surfaces shall not exceed 1,0 mg/dm when tested in accordance
with 7.2.4.1 and/or 7.2.4.2.
7.2.4.1 Carbon film test
The detection and assessment of carbon film shall be carried out in accordance with the method described in
Annex D.
7.2.4.2 Carbon content test
The determination of carbon content shall be carried out in accordance with the reference method described
in EN 723.
NOTE For factory production control, other methods, e.g. the carbon black test (modified VTR method), can be used
as an alternative.
7.2.5 Resistance to dezincification
Components which are manufactured from alloys containing more than 10 % zinc and which are declared to
be resistant to dezincification, shall be capable of meeting the acceptance criteria for resistance to dezincifica-
tion. When tested in accordance with Annex E/EN ISO 6509:1995, the depth of dezincification, in any direc-
tion, shall be:
 for grade A: maximum 200 µm;
 for grade B: mean not to exceed 200 µm and maximum 400 µm.
If any of the test pieces fail the dezincification resistance test, further test samples from the same batch shall
be selected for re-testing.
prEN 1254-1:2007 (E)
If all the further test pieces pass the test, the batch represented shall be deemed to conform to the require-
ments of this standard for dezincification resistance. If any of the further test pieces fail, then the batch repre-
sented shall be deemed not to conform to this standard.
NOTE If the user needs to heat the fitting to a temperature exceeding 550 °C, advice should be sought from the
manufacturer.
8 Designation
Fittings shall be designated by quoting:
a) common term or manufacturer's catalogue number (see Note 1);
b) number and part of this standard (EN 1254-1);
c) size of the connecting ends by the nominal outside diameter of the connecting tube or, in the case of fit-
tings incorporating threaded connections in accordance with EN 1254-4 or other standards, by the thread
designation (see Note 2 for sequence of specifying ends);
d) without abutment, if applicable;
e) if required, the grade of dezincification resistance acceptance criteria;
f) if required, the type of plating or coating.
NOTE 1 Fittings are normally designated either by a manufacturer's catalogue number or by the common terms, cou-
pling, bend, elbow, tee, etc.
NOTE 2 The preferred sequence a) for specifying ends is run-branch-run-branch (omitting where necessary for tees).
The non-preferred sequence b) is run-run-branch-branch (omitting where necessary for tees). Ordering details should
state if the non-preferred sequence system was used.
For fittings with equal ends, the nominal size can be specified by the one diameter. For fittings with unequal
ends, the largest size should be quoted first. For adaptor fittings, the ends are specified in the same order, but
the largest end of the run should be quoted first.
EXAMPLE Designation of an elbow fitting conforming to this standard
Elbow EN 1254-1 — 15 × 15
9 Marking
9.1 General
Each fitting shall be leg
...